Clamshell mode (disabled internal display) in Mavericks?

Does Mavericks, along with new multi-display features, let user work in clamshell mode? I really need clean and easy way to work only on my external display with internal one being disabled (closed or opened). I could achieve that with some hacks (waking up from external keyboard) before Lion. Since Lion it is very hard to achieve. Even using terminal commands is not working for me in 10.8.4.

I use mine with a Thunderbolt display at the office. I have my external keyboard, mouse, and drives plugged in to the display. Arriving at the office I only attach the power and thunderbolt cables on my rMBP.

It works 95% of the time. Occasionally I've had to unhook it and reattach it to get the USB speakers in the display to come on.

I got it working for me in Mavericks with internal display closed (really closed, not just sleeping), but with the lid open (or closed, stays shut either way)

Here's what I did:

1. Enter this into the terminal:

Code:

sudo nvram boot-args="iog=0x0"

2. Restart
3. Log in.
4. Connect a bluetooth device like a mouse.
5. Close the lid. The external display should power off too.
6. Move the mouse. This should wake up the external display but not the internal one.
7. Voila. The internal display stays shut even when you open the lid, while the external display keeps running.

I use this because my aging Macbook Pro's display doesn't work anymore so I don't want the graphics card powering it up along with the external one. I've noticed that this approach significantly reduces the temperature compared to when the GPU was having to power up both displays and the fans were at 6000rpm nonstop, even when I wasn't doing anything. They are nice and quiet now.

Yes, I know that I can do this when I spend 5 minutes or so on closing/opening the lid and waking up/powering on the Mac. Most of the times though it just goes to sleep back again, whatever I do. It is a pain.

Could anyone of developers make such a feature request (or a bug report, as for me it is clearly a bug)? Generic ability to disable any of the displays (internal or external) would be awesome - for other purposes, too.

I got it working for me in Mavericks with internal display closed (really closed, not just sleeping), but with the lid open (or closed, stays shut either way)

Here's what I did:

1. Enter this into the terminal:

Code:

sudo nvram boot-args="iog=0x0"

2. Restart
3. Log in.
4. Connect a bluetooth device like a mouse.
5. Close the lid. The external display should power off too.
6. Move the mouse. This should wake up the external display but not the internal one.
7. Voila. The internal display stays shut even when you open the lid, while the external display keeps running.

I use this because my aging Macbook Pro's display doesn't work anymore so I don't want the graphics card powering it up along with the external one. I've noticed that this approach significantly reduces the temperature compared to when the GPU was having to power up both displays and the fans were at 6000rpm nonstop, even when I wasn't doing anything. They are nice and quiet now.

so i typed this sudo command in and now my laptop doesn't recognize my external display at all. i try to connect and disconnect, close my mac's screen etc but nothing shows up on my external display. the only time anything shows up is if i unplug the hdmi to dvi adapter i'm using from my mac for a split second there's a flash of my screen on the external display but it goes away in a flash and then agin, nothing shows up.

I got it working for me in Mavericks with internal display closed (really closed, not just sleeping), but with the lid open (or closed, stays shut either way)

Here's what I did:

1. Enter this into the terminal:

Code:

sudo nvram boot-args="iog=0x0"

2. Restart
3. Log in.
4. Connect a bluetooth device like a mouse.
5. Close the lid. The external display should power off too.
6. Move the mouse. This should wake up the external display but not the internal one.
7. Voila. The internal display stays shut even when you open the lid, while the external display keeps running.

I use this because my aging Macbook Pro's display doesn't work anymore so I don't want the graphics card powering it up along with the external one. I've noticed that this approach significantly reduces the temperature compared to when the GPU was having to power up both displays and the fans were at 6000rpm nonstop, even when I wasn't doing anything. They are nice and quiet now.

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